What should you know about kallistia hyperpigmentation?

Darkening may follow inflammation from acne, eczema, irritation or an injury. Sun and visible light can deepen some patches, while hormonal influences can contribute to melasma. The colour may be brown, grey-brown or darker than the surrounding skin, and it can occur on the face, neck, hands or other exposed or previously inflamed areas. The appearance alone cannot identify the cause, so a clinician may ask when it began, whether it changes, and what products or medicines touch the area.

Use gentle cleansing, moisturise, and protect exposed skin from daylight with broad-spectrum sunscreen and physical protection. Avoid picking, harsh scrubs and products that sting, because fresh irritation can add more pigment. Treatment depends on the diagnosis and skin sensitivity; options may include a prescribed cream, a chemical peel, or selected light and laser procedures. Read about [Dark Patches On Skin](/symptoms/dark-patches-on-skin/) and discuss [Skin Brightening Treatment](/treatments/aesthetic-procedures/skin-brightening-treatment/) or [Hydroquinone Treatment](/treatments/medical-dermatology/topical-hydroquinone-therapy/) with a qualified clinician.

Arrange a skin assessment when a patch is new, rapidly changing, asymmetrical, itchy, painful, bleeding, crusted or different from your other marks. Seek prompt advice if darkening follows a new medicine or comes with widespread rash, swelling or breathing difficulty. A clinician can examine the pattern and decide whether further testing is needed.

What is the most likely cause of this colour change? Could any product, inflammation or medicine be contributing? Which treatment suits my skin tone and sensitivity, and how should I protect the area while using it?